EP0721382B1 - Procede, dispositif et installation pour revetir un tube, notamment un tube de pipeline - Google Patents

Procede, dispositif et installation pour revetir un tube, notamment un tube de pipeline Download PDF

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Publication number
EP0721382B1
EP0721382B1 EP95926408A EP95926408A EP0721382B1 EP 0721382 B1 EP0721382 B1 EP 0721382B1 EP 95926408 A EP95926408 A EP 95926408A EP 95926408 A EP95926408 A EP 95926408A EP 0721382 B1 EP0721382 B1 EP 0721382B1
Authority
EP
European Patent Office
Prior art keywords
tube
fact
layer
particles
polypropylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95926408A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0721382A1 (fr
Inventor
Bernard Cavalie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eupec Pipecoatings France SAS
Original Assignee
ISOTUB COATING
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ISOTUB COATING filed Critical ISOTUB COATING
Publication of EP0721382A1 publication Critical patent/EP0721382A1/fr
Application granted granted Critical
Publication of EP0721382B1 publication Critical patent/EP0721382B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • F16L13/0254—Welded joints the pipes having an internal or external coating
    • F16L13/0272—Welded joints the pipes having an internal or external coating having an external coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/08—Flame spraying
    • B05D1/10—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B05D7/148—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using epoxy-polyolefin systems in mono- or multilayers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F16L58/1072—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sprayed layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
    • F16L58/181—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for non-disconnectible pipe joints

Definitions

  • the subject of the present invention is a method for producing a protective coating on a tube and in particular on a pipeline tube capable of being immersed or buried, method in which operations are carried out for depositing at least one layer of epoxy. anticorrosion, at least one layer of an adhesive material of the polypropylene and / or polyethylene type, and optionally at least one layer of a material forming a protective envelope.
  • Pipeline tubes are generally used to transport back hydrocarbons and it is important that the corrosion protection of pipeline tubes be provided along the entire length of the transmission line and in particular on the coated parts to the right of the tube welds. This protection guarantees the sustainability of pipelines.
  • the tubes must have a coating of protection ensuring corrosion resistance under the conditions that take into account mechanical and chemical constraints, electrochemical and temperature.
  • the thickness of the coating of protection is an important criterion for the characteristics of the tubes as well realized.
  • the tubes When the tubes are intended to be immersed, their coating is in contact with seawater and the chemical composition of materials constituting said coating is also an important criterion of the tube quality.
  • the materials Preferably, the materials must have a waterproofing ensuring interior absorption at 10% on a three-day immersion period.
  • the coating is generally carried out after heating the tube, at a temperature between 200 ° and 260 ° C, necessary for the polymerization of certain types of materials used for coating such as epoxy powder.
  • thermosets and thermoplastic materials require equipment such as extruder, powder epoxy booth, induction heating, cooling tunnel.
  • the known methods and devices for producing a coating protector of a tube have another drawback. It is technically difficult to produce a protective coating comprising layers of various chemical compositions.
  • Document JP-A-30 42 078 describes a process for producing a coating of corrosion protection of metal tubes in which a layer is deposited primer of an epoxy type material, then, by thermal spraying, a layer of polyolefinic resin this layer of primer.
  • the object of the invention is to propose a method for producing a protective coating on a metal tube and in particular on a tube pipeline, allowing on the one hand to overcome the disadvantages mentioned above and secondly to get a coating of a tube having particular characteristics, the process being able to be implemented works both in the factory and on site.
  • the invention also aims to achieve, on the site of a site, part of the same coating as that carried out in the factory, so as to ensure the continuity of said coating on areas, for example of welds connecting two tubes.
  • the method comprises the other features:
  • Document WO-A-93 02 802 shows a torch for spraying resin particles polyolefinic controlled atmosphere and flame, the torch being powered by a vector gas and particle supply pipe, a protective gas pipe, a fuel line and an oxidizer line.
  • the invention also relates to an installation for the realization of the protective coating on a tube and which includes a frame comprising back support means and relative displacement in rotation and / or in translation of the tube and a particle projection device under flame and under controlled atmosphere, as described above.
  • the invention also relates to a tube comprising a protective coating obtained by the process described above coating successively comprising a epoxy layer, a layer of polyethylene and / or polypropylene adhesive modified forming an envelope whose thickness is greater than 0.5 mm. and optionally, in addition, an envelope layer of at least one material chosen from polypropylene and polyethylene whose thickness is greater than 0.5 mm, the envelope can be loaded with aggregates metallic and or mineral materials.
  • Protective coatings, in particular anticorrosion of tubes are usually made by different methods such as extrusion, electrostatic powdering, pneumatic spraying, tape application or sleeves, impregnation and winding.
  • a device 6 of particle projection under controlled atmosphere and under flame comprising at least one particle projection torch, as shown in FIG. 2.
  • the flame projection device 6 particles of material in the powder state, it is possible to produce a coating 5 having improved characteristics with, for particular advantage, the in fact, before deposition, the tube 1 is heated to less than 200 ° C.
  • the materials used by other techniques known could be used in powder form and sprayed by a torch 7 under jet of a neutral carrier gas such as for example nitrogen,
  • a neutral carrier gas such as for example nitrogen
  • the vector gas jets and protector are surrounded by a flame obtained by the combustion of a gas, such as acetylene, crylene or tetrene, associated with an oxidizer such as oxygen or an oxygen / nitrogen mixture.
  • a gas such as acetylene, crylene or tetrene
  • an oxidizer such as oxygen or an oxygen / nitrogen mixture.
  • a particle projection device 6 under controlled atmosphere and under flame, provides a chemical bond and mechanics of layers of different materials.
  • the quasi projection simultaneous powders also ensures a gradual transition in density, of a layer material with the layer material next, which creates a composite interface.
  • the particles projected in the powder state are chosen advantageously from an anticorrosion epoxy, an adhesive modified polyethylene, adhesive modified polypropylene, polyethylene, propylene or Rilsan.
  • a first sprayed layer of anti-corrosion epoxy particles is essential for pipeline coating.
  • Induction heating known from the prior art is difficult to implement on a site. It is advantageously replaced by a flame heating, which considerably reduces the complexity of the installation for implementing the method.
  • the process according to the invention and its device 6 for projecting particles are particularly interesting on a construction site.
  • the flame heating carried out simultaneously with the operation of projection of particles intended to form a layer of the coating 5 ensures, by a constant supply of thermal energy, and unlike a pre-heating, constant physical conditions, whatever the thickness of the deposited layer. It allows the deposition of a layer of desired thickness, without limitation on thickness.
  • the coverings can be made with thicknesses do around 0.5mm, 10mm, or even 20mm or more.
  • FIG. 2 shows an example of device 6 comprising at series at least one torch 7 do projection of epoxy particles anticorrosion 2, at least one torch 7 for spraying adhesive particles 3 of modified polypropylene or modified polyethylene adhesive 3, and optionally a torch 7 for projecting particles of at least one material forming an envelope 4, polyethylene and / or polypropylene, the different torches 7 being fed simultaneously by a conduit 8 for supplying carrier gas and powder, a protective gas line 9 a fuel line 10, a oxidizer duct 11.
  • the different torches 7 can be placed on one or several ramps 12 parallel to the tube 1, or even on a succession crowns, each with its own function.
  • the device 6 can further comprise a series of preheating torches, not shown in the figure, associated with deposit torches 7 which can be placed either on the ramp (s) 12, either on at least one crown.
  • a torch 7 for depositing the device includes a supply of carrier gas and a supply of regulated protective gas by a distributor 18.
  • the torch 7 is connected to the distributor 18 by the conduits 8 and 9 for its supply of carrier gas and powder, and of gas protective.
  • the carrier gas 8 is associated with the conduit, a means 16 for controlling the flow rate of the powder, and one for regulating means 17 of said flow, regulation 17 which respectively influences the distributor 18 and a powder supply valve 19.
  • the device (6) is, in particular, intended to deposit relatively thick layers of thickness greater than 0.5 mm and up to several centimeters.
  • the torch used must be controlled and controlled in powder flow on the one hand, ensuring a perfect homogeneity of the thickness of the layer and on the other hand, ensuring a deposition rate compatible with industrial requirements or site, for example the realization of a coating for welded joint on a pipeline laying barge.
  • the torches 7 according to the invention allow, in an example of an application, a projection of 3,000 to 12,000 g / m 2 / h of epoxy and 3,000 to 10,000 g / m 2 / h of polypropylene and / or polyethylene.
  • An advantage of the invention is the application with a torch equipped with a protective jet gas which allows the chemical properties to be preserved and / or resistance to thermal aging of the material (s), which is essential in the application of several successive layers.
  • the functional bonds contained in a polymer, preserved according to the invention thanks to the use of an atmospheric projection torch controlled, are capable of reacting chemically with epoxy bonds, this which allows to obtain an association of different layers with a level high adhesion adhesion is therefore chemical and mechanical.
  • the invention also relates to an installation for the production of a protective coating on a tube (1) with the method and device described, installation which comprises a frame 13 comprising, as shown in FIG. 4, support and displacement means 20 relative in rotation and / or in translation of the tube 1 and of the device 6 of projection of particles under flame and under controlled atmosphere.
  • the installation can be effectively carried out either using a ring projection device 6, as shown in FIG. 4, the tube 1 moving longitudinally in translation or in rotation and in translation, either by using a projection device 6 moving in rotation and translation around a fixed tube, or again, so general, combining the movement of device 6 and tube 1 of so that the entire surface of said tube is covered with a deposit homogeneous.
  • the installation can include, in addition to the device, with or without its preheating means 21 in the form of torches, medium backs sandblasting, shot blasting, chromating, not shown in the figure or alternatively means 22 for cooling the coated tube.
  • the invention also relates to the tube produced according to the method as shown in Figure 1, which can be made as follows
  • Avan the application of the coating 5, the tube 1 undergoes a cleaning by sandblasting or shot blasting. Then, the steel tube 1 is slightly heated to remove all traces of moisture. We raise the temperature of tube 1 so that it reaches approximately 50 ° C. by means of a preheating torch which can be associated with the projection device of particles.
  • a powder epoxy spray 2 is applied to the tube at using epoxy powder spraying torches 7, layer 2 epoxy providing protection against corrosion.
  • a layer 3 of polyethylene modified with maleic anhydride or a layer 3 of polypropylene also modified with maleic anhydride in order to ensure an adhesive character to said layer.
  • This layer can also form a protective envelope for the tube.
  • a third layer and / or a fourth layer consisting of either a polyethylene or a polypropylene, are deposited to form an envelope 4 of protection which may be corrosion protection, against impact mechanical or thermal.
  • the powder projections by means of torches 7 placed in series and at a distance close to each other ensure, during the change in layer composition, a transition zone to the interface of two successive layers, a gradual transition from composition of the material from the lower layer to the composition of the material of the directly upper layer combining the layers of the physico-chemical and mechanical point of view.
  • FIGS. 5A and 5B show an example of application of the process. It is possible using the device according to the invention to carry out on a building site at a weld zone 25 between two tubes 1 industrially coated in the factory, a fitting 26, between the two coatings 5 of tubes 1.
  • the connector 26 shown in FIG. 5A is produced by depositing torch with a layer of anticorrosion epoxy 27, then with a layer for example of adhesive modified polypropylene or polyethylene 28 forming the envelope.
  • the connector 26 can also be produced as shown in FIG. 5B by depositing a layer of anticorrosion epoxy 27, then layers of adhesive modified polypropylene or polyethylene 28 followed by a deposit of polyethylene or polypropylene forming an envelope 4 of the coating 5, still by means of a particle projection torch.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Pipeline Systems (AREA)
  • Coating Apparatus (AREA)
  • Thermal Insulation (AREA)
  • Electric Cable Installation (AREA)
EP95926408A 1994-07-28 1995-07-20 Procede, dispositif et installation pour revetir un tube, notamment un tube de pipeline Expired - Lifetime EP0721382B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9409511A FR2723006B1 (fr) 1994-07-28 1994-07-28 Procede pour realiser un revetement de protection sur un tube et, notamment, sur un tube de pipeline dispositif et installation pour sa mise en oeuvre
FR9409511 1994-07-28
PCT/FR1995/000979 WO1996003222A1 (fr) 1994-07-28 1995-07-20 Procede, dispositif et installation pour revetir un tube notamment un tube de pipeline

Publications (2)

Publication Number Publication Date
EP0721382A1 EP0721382A1 (fr) 1996-07-17
EP0721382B1 true EP0721382B1 (fr) 1999-09-22

Family

ID=9465950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95926408A Expired - Lifetime EP0721382B1 (fr) 1994-07-28 1995-07-20 Procede, dispositif et installation pour revetir un tube, notamment un tube de pipeline

Country Status (13)

Country Link
EP (1) EP0721382B1 (es)
AT (1) ATE184815T1 (es)
BR (1) BR9506288A (es)
CO (1) CO4600691A1 (es)
DE (1) DE69512369T2 (es)
DK (1) DK0721382T3 (es)
ES (1) ES2138746T3 (es)
FI (1) FI961400A0 (es)
FR (1) FR2723006B1 (es)
GR (1) GR3032062T3 (es)
NO (1) NO308727B1 (es)
PE (1) PE7397A1 (es)
WO (1) WO1996003222A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195370A (zh) * 2015-10-16 2015-12-30 宝汇建设工程有限公司 钢管外表面喷漆喷砂组合装置

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2076703A4 (en) * 2006-09-29 2010-10-06 Offshore Joint Services Inc Duct seal for wet insulation with improved adhesion
ITMI20062000A1 (it) 2006-10-18 2008-04-19 Saipem Spa Sistema di trazi9one di linee funzionali in particolare linee di ormeggio e-o linee di produzione di una unita' galleggiante di produzione
ITMI20062402A1 (it) 2006-12-14 2008-06-15 Saipem Spa Metodo e apparecchiatura di giunzione di spezzoni di tubo per realizzare tubazioni sottomarine e natante di posa di tubazioni sottomarine comprendente tale apparecchiatura
ITTO20070027A1 (it) 2007-01-17 2008-07-18 Saipem Spa Rampa di varo per un natante di posa di tubazioni sottomarine, metodo di azionamento della rampa di varo e natante di posa comprendente tale rampa di varo
ITMI20070414A1 (it) 2007-03-02 2008-09-03 Saipem Spa Metodo e apparecchiatura per realizzare uno strato protettivo attorno ad una porzione anulare di giunzione fra spezzoni di tubo atti a realizzare una tubazione subacquea e natante di posa di tubazioni subacquee comprendente tale apparecchiatura
ITMI20070726A1 (it) * 2007-04-10 2008-10-11 Saipem Spa Metodo e impianto di giunzione di spezzoni di tubo per realizzare una tubazione subacquea e natante di posa di tubazioni subacquee comprendente tale impianto
GB0716750D0 (en) * 2007-08-29 2007-10-10 Pipeline Induction Heat Ltd Improvements in coating pipes
GB0812071D0 (en) * 2008-07-02 2008-08-06 Pipeline Tech Ltd Pipe coating
FR2952159B1 (fr) 2009-11-02 2012-01-06 Eupec Pipecoatings France Procede pour realiser un revetement de protection sur un tube et tube comportant un revetement obtenu par un tel procede.
IT1403637B1 (it) * 2011-01-20 2013-10-31 Saipem Spa Metodo di giunzione di spezzoni di tubo per realizzare tubazioni per idrocarburi, in particolare tubazioni sottomarine
NL2007441C2 (en) * 2011-09-19 2013-03-21 Heerema Marine Contractors Nl Coating device for coating a pipeline or a pipe section.
NL2008206C2 (en) * 2012-01-31 2013-08-01 Bluemarine Offshore Yard Service B V Device and method for the coating of a surface area of a gap in the coating of a pipeline.
DE102014102621A1 (de) * 2014-02-27 2015-08-27 Doege Beteiligungs Gmbh Grossrohranordnung und Verfahren zur Herstellung einer solchen
CN109058658A (zh) * 2018-09-27 2018-12-21 江苏清源管道技术有限公司 一种管道补口三层pe防腐结构及施工工艺

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105195370A (zh) * 2015-10-16 2015-12-30 宝汇建设工程有限公司 钢管外表面喷漆喷砂组合装置

Also Published As

Publication number Publication date
BR9506288A (pt) 1997-08-12
NO960926L (no) 1996-03-07
CO4600691A1 (es) 1998-05-08
WO1996003222A1 (fr) 1996-02-08
FI961400A (fi) 1996-03-27
NO308727B1 (no) 2000-10-23
PE7397A1 (es) 1997-05-06
GR3032062T3 (en) 2000-03-31
DK0721382T3 (da) 2000-04-03
FI961400A0 (fi) 1996-03-27
DE69512369D1 (de) 1999-10-28
EP0721382A1 (fr) 1996-07-17
DE69512369T2 (de) 2000-03-23
FR2723006B1 (fr) 1996-09-13
ATE184815T1 (de) 1999-10-15
ES2138746T3 (es) 2000-01-16
FR2723006A1 (fr) 1996-02-02
NO960926D0 (no) 1996-03-07

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